399115886

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{495181}}^1$

素因数の和:495227

約数の個数: 16

約数和(自身を含む): 665524608

約数和(自身を除く): 266408722

約数列:

[1, 2, 13, 26, 31, 62, 403, 806, 495181, 990362, 6437353, 12874706, 15350611, 30701222, 199557943, 399115886]

約数ペア:

[(1, 399115886), (2, 199557943), (13, 30701222), (26, 15350611), (31, 12874706), (62, 6437353), (403, 990362), (806, 495181)]